AMD Rembrandt CPUFreq vs. AMD P-State Linux Testing

The results varied quite a bit between the different workload characteristics. It largely depends upon what workloads you are most engaged in and how much you care about performance vs. power savings for which governor can make the most sense.

In total I ran more than 100 different benchmarks while also analyzing the CPU peak frequency, CPU temp, and system power consumption on a per-test basis. See all of the data via this OpenBenchmarking.org result file for those wanting to analyze all of the data in fine detail for what tests are most relevant to your usage. Overall though particularly in the amd-pstate schedutil configuration as is increasingly becoming the default among Linux distributions, there were at times arguably poor CPU frequency scaling decisions made that led to much lower performance than the rest. The amd-pstate performance mode tended to deliver the best performance overall and usually with only marginal increases to the battery power consumption rate.